Bookcicle Notary
Desktop-first provenance
for your drafts.
Create unlimited local proofs (free with a Bookcicle account), then optionally add subscriber-only Cloud Attests and public anchors (receipts only). Every proof ships as a single .bkclp capsule plus an included Technical certificate.
Create durable proof records for milestones, exports, and handoffs without sending your source content to the cloud. Authors can prove key checkpoints, and collaborators can create their own proofs as work moves in or out of their hands.
See it in the desktop app
Review proof details, verify capsules, and work from a desktop-first surface designed for creators who need more than screenshots.
Why Bookcicle Notary
Provenance that fits how creators actually work: local-first, portable, collaboration-aware, and built for long-term verification.
Proofs, not promises
Bind content bytes to timestamps and signers so provenance is backed by cryptographic evidence instead of platform trust or screenshots.
Privacy-first workflow
Source content can stay on-device. The cloud layer handles proof receipts, not your draft itself.
Portable capsules
Export proofs as a single .bkclp capsule so records can be retained, shared, and verified later.
Built for real handoffs
Authors can create milestone proofs, while collaborators can create their own proofs around incoming work, outgoing deliverables, and revisions.
Optional public anchors
Add OpenTimestamps and Bitcoin-backed receipts when you want a stronger long-term timestamp trail.
Verification-ready
Verify later using the capsule plus bytes, whether those bytes are embedded or supplied separately.
Desktop features
Early access, already powerful.
Bookcicle Notary Desktop v0.0.1 already goes beyond simple local signing. The current build supports offline capsule verification, proof-of-possession workflows, file and folder watchers, checkpoint bytes, optional cloud attests, manual anchor requests, and portable proof exports.
Privacy first
Your content never has to leave your device. Create local proofs, export portable capsules, and verify evidence without uploading source material to the cloud.
Anonymous capsule verification
Open a .bkclp capsule and run verification checks without signing in. Attach the original file, folder, or checkpoint bytes when you want deeper evidence checks.
Proof-of-Possession requests
Request or respond to PoP challenges to confirm that the holder still controls the device key behind a proof, giving collaborators a stronger continuity signal than a static receipt alone.
File and folder watchers
Watch files or folders for changes and create local proofs automatically. This is built for real drafting workflows, not just one-off manual exports.
Optional managed attests
Pair manual or watcher-created proofs with Bookcicle attests when you want a platform receipt, and support policies like auto-attest flows for ongoing projects.
Manual anchor requests
Submit public anchor requests on demand, then let Desktop track pending, completed, or failed anchor state from the local proof record.
Checkpoint byte snapshots
Preserve checkpoint bytes for later verification, including deterministic folder snapshots, so a proof can still be validated even when the original source has moved.
Flexible capsule exports
Export local-only capsules, receipt-backed capsules, or receipt-plus-bytes capsules, and even extract the preserved original content when checkpoint bytes are embedded.
Chain-aware provenance
Proofs can carry device and project continuity fields, helping show how work progressed across revisions, milestones, and collaborator handoffs instead of treating every proof as isolated.
Releases
Desktop release downloads
Download the latest desktop packages and verify them with the published checksum manifest, detached signature, and environment public key. macOS rows prefer the DMG in the UI when one is published. Linux releases are published as a tarball bundle that includes the staged app plus per-user install scripts.
| Target | Version | Package | Download | SHA256SUMS | Signature | Public key |
|---|---|---|---|---|---|---|
| Loading releases… | ||||||
Install & verify
Get started on your platform
Download the package for your operating system, then verify it before opening or installing it. For strongest validation, first verify SHA256SUMS.txt.sig using the published Bookcicle public key for this environment, then compare the hash of your downloaded package to the matching entry in SHA256SUMS.txt.
macOS
Choose the build that matches your hardware: macOS Apple Silicon for M-series Macs or macOS Intel for older x86_64 systems. The desktop download selector puts the detected match first. When a DMG is published, the desktop UI prefers the .dmg in the download selector and release table. ZIP packages may still appear in updater metadata and checksum manifests.
Download the macOS package shown in the UI, open the .dmg when available, and move Bookcicle.app into Applications.
First validate SHA256SUMS.txt.sig against the published Bookcicle public key. Then compare the checksum of your downloaded macOS package to the matching line in SHA256SUMS.txt.
shasum -a 256 bookcicle-desktop-...-macos-aarch64.dmgWindows
Download the published .msi installer for the current Windows x86_64 release. The installer is signed during publish, and checksum files are published alongside it.
Run the MSI and follow the installer flow. This installs the main desktop application and the Notary agent packaged with the same release target.
Validate SHA256SUMS.txt.sig with the published Bookcicle public key, then compare your MSI hash to the checksum file before opening it.
certutil -hashfile bookcicle-desktop-...-windows-x86_64.msi SHA256Linux
Download the published .tar.gz bundle for Linux x86_64. While we aim to fully support Linux, macOS, and Windows, our current focus is on macOS and Windows. The Linux release includes a portable bundle plus per-user install.sh and uninstall.sh scripts, but we cannot guarantee identical behavior across all Linux distributions, desktop environments, or runtime/library combinations.
Extract the tarball, then either run the app directly from the unpacked bundle or use the included install.sh script for a per-user install. The installer places the app under your local user directories, installs the desktop entry and icon, and stages the Notary agent alongside the desktop app.
Validate the detached checksum signature first with the published Bookcicle public key, then compare the SHA-256 of your downloaded tarball to the matching entry in SHA256SUMS.txt before extracting or installing it.
sha256sum bookcicle-desktop-...-linux-x86_64.tar.gzVerification flow
Every published target includes a package, a SHA256SUMS.txt file, a detached SHA256SUMS.txt.sig signature, and a published environment public key. The verification order is:
Confirm the checksum manifest itself is authentic by verifying SHA256SUMS.txt.sig with the Bookcicle public key linked in the release table for this environment.
Compute the SHA-256 of the package you downloaded on your machine.
Make sure your hash exactly matches the package entry in SHA256SUMS.txt before opening or installing.
If the checksum signature fails, the package hash does not match, or the public key does not match the expected environment, do not open or install the package.
Supporting all the best AI providers
Whether you prefer OpenAI, Anthropic, Amazon, DeepSeek, Cohere, or Mistral, Bookcicle connects you to your favorite provider with seamless integration.
AI Services & Beyond
Bookcicle AI Agents at your fingertips
Ghost-writing, Editorial Edits, Literary Translation, Literary Convert and more—pick exactly the AI power you need, pay once, keep 100 % of your rights, and publish faster than ever.
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Editorial Edits
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Line, copy, and developmental edits in a single pass—arrive publication-ready so human editors can focus on your big ideas.
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Ghost-writing Assistance
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Draft up to 30 sections or chapters faster with an AI co-author that matches your unique voice and pacing.
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Multi-Format Exports
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Write your project once, then automatically adapt it into new formats— novel to screenplay, screenplay to short story, or even instant translation into different languages, all via Bookcicle’s AI.
AI Services & Beyond
Write Bigger, Faster, Smarter with Bookcicle AI
Bookcicle delivers a full suite of AI-powered services—ghost-writing, editorial edits, literary translation, character art, and more. Pick exactly what you need, pay once, and keep 100 % of your rights.
- AI Translation & Adaptation
- Have a draft in English but need a Spanish or French edition? Bookcicle’s AI translation will get you there—fast and accurately.
- Ghostwriting & Outline Tools
- Stuck on a scene? Let the AI ghostwriter draft it for you or get a structured outline with a current max output of 30 sections/chapters to keep your plot on track.
- Multiple AI Options
- Prefer a certain AI style or model? We integrate with multiple advanced language engines, so you can choose the best voice for your project.
Our track record, Our Commitment.
Trusted by authors worldwide
Bookcicle empowers writers of every genre to create, transform, and refine their stories. Whether you’re a first-time novelist or a seasoned pro, our integrated environment gives you the tools you need to succeed.
Ready to craft your next story?
Experience the power of AI and seamless collaboration. Bookcicle’s integrated environment helps you write faster, create better, and publish with confidence. Join us and discover a new era of writing today.